On the December 15 broadcast of Mnet's 'Wanna One Go: Zero Base', Wanna One attended the '2017 MAMA' in Hong Kong!

Ha Sung Woon bumped into his besties EXO's Kai, SHINee's Taemin, and BTS's Jimin backstage on the red carpet, and was unable to contain his excitement. The idol stars took the time to take a selfie with his friends, after reuniting for the first time in a while.